Thank you, This does give me another path to explore. (I could use something like an Atmel AVR to read the serial line.) -- View this message in context: http://elecraft.365791.n2.nabble.com/Driving-external-relays-by-mode-or-maybe-by-band-tp7587243p7587252.html Sent from the Elecraft mailing list archive at Nabble.com.